Levels of Organization Practice

Which of the following is the correct order of organization in living things from most basic (simple) to most complex?

• a.  Organism, cell, tissue, organ, organ system
• a.  Organ system, organ, tissue, cell, organism
• a.  Cell, tissue, organ, organ system, organism
• a.  Cell, organ, tissue, organ, organism, organ system

Students construct a graphic organizer to illustrate the different levels of biological organization. Which term does the letter X represent in the graphic organizer?

• Cell

• Organism

• Ecosystem

• Biosphere

Multiple organisms of the same species describes a

• organism
• population
• community
• ecosystem

Which level of organization is the most complex?

• organism
• population
• community
• ecosystem

What do ecosystems have that the other three levels of organization do not have?

• living things
• biotic factors
• abiotic factors
• organisms

A forest full of many kinds of trees and grasses is an example of a

• group
• organism
• population
• community

Which level of organization is more complex than a population and less complex than an ecosystem?

• organism
• population
• community
• ecosystem

Which is an example of a population?

• different kinds of bacteria
• A group of fish and sharks
• deer, bear, and rabbits
• A herd of cattle

Which is the definition of a community

• multiple organisms of the same species
• all the living and nonliving things in an area
• a living thing
• multiple organisms of different species

The most basic level of organization in the human body that is considered to be living.

• tissue

• cell

• molecule

• atom